Android - Junit Testing Models/controllers (which Only Use Java Imports) Without The Android Emulator Deploy

I've got two different UnitTest Projects for my Android App Project. One for the Model Classes (which only uses java imports), and one for the Activities (which obviously uses both

Solution 1:

My Test-Classes used to be:

publicclassMyUnitTestextendsandroid.test.AndroidTestCase
{
    publicvoidaTest(){
        ...
        assertSomething(...);
        ...
    }

    ...
}

And I used to run them with Run As -> Android JUnit Test.

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I've changed it by the following steps:

1. First I've followed the instructions here.
2. Then in all my Test-Classes I've removed the extends android.test.AndroidTestCase.
3. Added the following two imports: import junit.framework.Assert; and import org.junit.Test; (WARNING: Make sure you use junit.framework.Assert instead of org.junit.Assert).
4. Added @Test before every Test-Method.
5. Changed all assertSomething(...); to Assert.assertSomething(...); and all fail(...); to Assert.fail(...);
6. Removed some Android-Logs I still had in some of my Model/Controller classes..

Now my Test-Classes are:

import junit.framework.Assert;

import org.junit.Test;

publicclassMyUnitTest
{
    @TestpublicvoidaTest(){
        ...
        Assert.assertSomething(...);
        ...
    }

    ...
}

And now I'm able to run the Project by Run As -> JUnit Test.

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UPDATE:

When you have this Project up and running, testing all UnitTests at the same time in Eclipse by right-clicking the Project -> Run as -> JUnit Test isn't a problem. But when you try to Test individual UnitTest-classes (like the ones you've just added), the same error as in my question might occur.

These are the steps when you want to add a Java-only UnitTest-class in your Test-Project, which only uses Java libraries and enabling individual testing of the Test-classes without getting the error:

1. Add a class (right-click a folder inside src) -> New -> Class
2. Add the import junit.framework.Assert; and import org.junit.Test; like mentioned above.
3. Create some UnitTest-methods with the synthax like above (so including the @Test and Assert.assertSomething(...);)
4. Right-click the new UnitTest -> Run as -> JUnitTest
5. Select Eclipse JUnit Launcher
6. Now the error will occur that is displayed at the bottom of my question-post
7. Right-click the Test-Project -> Properties -> Run/Debug Settings
8. Select the new UnitTest that gives the error -> Edit...
9. Go to the Classpath tab -> Under Bootstrap Entries remove Google APIs [Android 4.4.2]. (This might be different in your case, but you should remove the Android API or Android Google API.)
10. After you've removed it click Apply -> OK -> Apply again at the Run/Debug Settings -> OK

Now you are successfully able to use Run As -> JUnit Test on this individual Test-class, instead of being forced to Test the entire Project every time.

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I hope this helps anyone trying to make JUnit Tests for an Android project. PS: I also have a second Test-Project with the JUnit Tests that require Android libraries. Just make sure none of the classes you want to test uses Android Libraries (like Logcat-messages, Test-Toasts, or something like Patterns.WEB_URL.matcher(url).matches()) [android.util.Patterns] which validates a String URL) are being used inside your JUnit-only Test Project.